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Robert R. Barefoot
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Calgary, CA
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last 30 patents
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Patent Grant
Waterflow differential electrical charging process for ores
Patent number
4,975,182
Issue date
Dec 4, 1990
DCRS (Barbados) Ltd.
Robert R. Barefoot
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...